iproute2: update to 5.4.0

Update iproute2 to latest stable version, see https://lwn.net/Articles/805654/
for the changes in 5.4.0

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

package/network/utils/iproute2/patches/175-reduce-dynamic-syms.patch

@@ -1,6 +1,6 @@
 --- a/tc/Makefile
 +++ b/tc/Makefile
-@@ -110,7 +110,7 @@ LDLIBS += -L. -lm
+@@ -111,7 +111,7 @@ LDLIBS += -L. -lm
  
  ifeq ($(SHARED_LIBS),y)
  LDLIBS += -ldl
@@ -9,7 +9,7 @@
  endif
  
  TCLIB := tc_core.o
-@@ -140,7 +140,7 @@ MODDESTDIR := $(DESTDIR)$(LIBDIR)/tc
+@@ -141,7 +141,7 @@ MODDESTDIR := $(DESTDIR)$(LIBDIR)/tc
  all: tc $(TCSO)
  
  tc: $(TCOBJ) $(LIBNETLINK) libtc.a
@@ -18,7 +18,7 @@
  
  libtc.a: $(TCLIB)
  	$(QUIET_AR)$(AR) rcs $@ $^
-@@ -162,6 +162,7 @@ install: all
+@@ -163,6 +163,7 @@ install: all
  clean:
  	rm -f $(TCOBJ) $(TCLIB) libtc.a tc *.so emp_ematch.yacc.h; \
  	rm -f emp_ematch.yacc.*
@@ -26,7 +26,7 @@
  
  q_atm.so: q_atm.c
  	$(QUIET_CC)$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -shared -fpic -o q_atm.so q_atm.c -latm
-@@ -201,4 +202,15 @@ static-syms.h: $(wildcard *.c)
+@@ -202,4 +203,15 @@ static-syms.h: $(wildcard *.c)
  		sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:extern char \1[] __attribute__((weak)); if (!strcmp(sym, "\1")) return \1;:;p}' $$files ; \
  	done > $@